Novel ratchet device

Abstract

The utility model relates to a novel ratchet wheel device which comprises a ratchet wheel and a pawl. Gears are arranged on the ratchet wheels; the pawl comprises a pawl tooth end, a pawl elastic device and a pawl base end; one end of the pawl tooth end is matched with and can be meshed with a gear on the ratchet wheel; the pawl elastic device is located between the pawl tooth end and the pawl base end, one end of the pawl elastic device is in contact with the other end of the pawl tooth end, the other end of the pawl elastic device is in contact with the pawl base end, and the pawl elastic device is in a compressed state by the pawl tooth end and the pawl base end; the base end of the pawl is installed beside the ratchet wheel, and it is guaranteed that the tooth end of the pawl can be meshed with the gear on the ratchet wheel. When the pressure of the gear on the ratchet wheel on the pawl is larger than or equal to the breakthrough force, the overall length of the pawl is compressed to be short enough, and the pawl and / or the ratchet wheel can rotate in the direction stopped by the pawl. The device allows the ratchet wheel to rotate in the direction stopped by the pawl, so that the novel ratchet wheel device allows the pawl and / or the ratchet wheel to rotate bidirectionally and does not damage the pawl and / or the ratchet wheel.

Description

Technical Field

[0001] The present application relates to the field of ratchet technology, and in particular to a novel ratchet device. Background Art

[0002] Ratchets and pawls are widely used in machinery, such as bicycles. A ratchet has a gear on it that works with the pawl to rotate it in one direction. Current ratchet systems can only rotate in the opposite direction if the pawl is separated from the ratchet, or if an external force is too strong and damages the ratchet and / or pawl. The utility model proposes a solution in which the pawl is designed to have an overall length that is elastic and can be changed in length. When the ratchet rotates in the direction blocked by the pawl, if the pressure of the gear on the ratchet wheel on the pawl is large enough, the overall length of the pawl can be compressed to be short enough, and the ratchet can be rotated in the direction blocked by the pawl. The minimum pressure of the gear on the ratchet wheel on the pawl required for the ratchet wheel to rotate in the direction blocked by the pawl is simply referred to as the breakthrough force. When the pressure of the gear on the ratchet wheel on the pawl is below the breakthrough force, the ratchet wheel can only rotate in one direction in the direction of following the pawl. When the pressure of the gear on the ratchet wheel on the pawl reaches the breakthrough force, the ratchet wheel can also rotate in the opposite direction of the pawl without damaging the ratchet wheel and the pawl. When the pressure of the gear on the ratchet wheel on the pawl drops below the breakthrough force, the ratchet wheel returns to the state of being able to rotate in one direction only. Summary of the Invention

[0003] The technical solutions of the present utility model are as follows.

[0004] A novel ratchet device includes a ratchet and a pawl. For the sake of clarity and simplicity, some descriptions of well-known functions and structures are omitted in the following description.

[0005] There is a gear on the ratchet, and the gear on the ratchet is on the outside or inside of the edges around the ratchet, or on the outside or inside of the side of the ratchet. The ratchet structure is basically the same as the ratchet device in daily machinery. The innovation of the present utility model lies in the pawl, so the ratchet will not be described in detail here.

[0006] The pawl comprises a pawl tooth end, a pawl elastic device and a pawl base end.

[0007] The pawl tooth end is the head of the pawl, and the shape of the pawl tooth end is similar to the head of the pawl of the ratchet device in daily machinery. It matches and can engage with the gear on the ratchet.

[0008] The pawl elastic device is an elastic device installed between the pawl tooth end and the pawl base end, so that the overall length of the pawl can be extended or retracted when the pawl is subjected to pressure. The pawl elastic device can be various springs or other elastic devices.

[0009] The pawl base end is the tail of the pawl. The pawl base end is similar in shape to the tail of the pawl of the ratchet device in daily machinery. It is installed next to the gear on the ratchet to ensure that the pawl tooth end can engage with the gear on the ratchet.

[0010] The pawl elastic device is located between the pawl tooth end and the pawl base end. The pawl tooth end, the pawl elastic device and the pawl base end are assembled into a stable whole to form a pawl. Because there is a pawl elastic device between the pawl tooth end and the pawl base end, the overall length of the pawl has the flexibility to change in length.

[0011] When the assembled pawl is not subjected to external force, its pawl elastic device is also in a compressed state, and thereby generates an outward elastic force on the pawl tooth end. When there is no external force, the outward elastic force of the pawl elastic device on the pawl tooth end is simply referred to as the elastic static value; when the pressure of the pawl tooth end on the pawl elastic device is less than the elastic static value, the pawl elastic device will not be compressed, and the overall length of the pawl will not change. Only when the pressure of the pawl tooth end on the pawl elastic device reaches the elastic static value, the pawl elastic device will be further compressed and shortened, thereby shortening the overall length of the pawl; the pressure of the gear on the ratchet wheel on the pawl can make the pawl tooth end generate pressure on the pawl elastic device. In order to achieve the pressure of the ratchet tooth end on the pawl elastic device reaching the elastic static value, the minimum pressure of the gear on the ratchet wheel on the pawl is simply referred to as the deformation pressure, that is, only when the pressure of the gear on the ratchet wheel on the pawl reaches the deformation pressure, the overall length of the pawl can be compressed and shortened.

[0012] The breakthrough force of the novel ratchet device proposed by the utility model must be greater than the deformation pressure.

[0013] The pawl tooth end, the pawl elastic device, and the pawl base end can be assembled in various ways. For example, the pawl base end has an internal cavity, the pawl tooth end is partially inserted into the internal cavity of the pawl base end and partially exposed outside the pawl base end, the pawl elastic device is also placed in the internal cavity of the pawl base end and is placed between the pawl tooth end and the bottom of the internal cavity of the pawl base end, and the pawl elastic device can continuously maintain an outward elastic force on the pawl tooth end; of course, the pawl tooth end can also have an internal cavity, the pawl base end is partially inserted into the internal cavity of the pawl tooth end, and the pawl elastic device is placed in the internal cavity of the pawl tooth end and is placed between the pawl base end and the bottom of the internal cavity of the pawl tooth end. The specific assembly method of the pawl tooth end, the pawl elastic device and the pawl base end is not restricted, as long as the assembled pawl is stable as a whole, the assembled pawl is not easy to bend and deform, the overall length of the pawl has the flexibility to change in length, and the new ratchet device composed of the assembled pawl and ratchet has a suitable and stable breakthrough force.

[0014] On the premise of ensuring that the pawl and the gear on the ratchet wheel mesh well and generate sufficient and stable resistance, the size and shape of the gear on the ratchet wheel, and the size and shape of the part on the tooth end of the pawl that meshes with the gear on the ratchet wheel can be designed, and the size of the ratchet wheel radius, the shape of the pawl and the length of the pawl when not under stress should be comprehensively considered. The installation position of the pawl next to the gear on the ratchet wheel should be reasonably arranged so that when the pressure of the gear on the ratchet wheel on the pawl increases from deformation pressure to breakthrough force, the overall length of the pawl is compressed and shortened as little as possible.

[0015] The assembled pawl is installed next to the gear on the ratchet to ensure that the tooth end of the pawl can mesh with the gear on the ratchet. The installation method is the same as the pawl installation method of the ratchet device on the current mechanical equipment.

[0016] Depending on the position of the gear on the ratchet wheel, the installation position of the pawl will be different accordingly, but it must be ensured that the pawl matches the gear on the ratchet wheel and can mesh.

[0017] For the novel ratchet device proposed in the present invention, when an external force wants the ratchet to rotate in the direction of the pawl, the ratchet can rotate smoothly, and its working principle and working method are the same as those of the ratchet device on the current mechanical equipment.

[0018] When the pawl is engaged, the gear of the ratchet wheel is forced to move forward, and the pawl is compressed, so that the pawl can be turned in the opposite direction, and ...

[0019] By changing the elasticity of the pawl elastic device, the size of the breakthrough force of the new ratchet device can be adjusted.

[0020] To prevent the pawl from rotating when the ratchet wheel rotates in the direction the pawl blocks, a positioning device can be installed next to the pawl. When the pawl is tightly against the positioning device, it can mesh with the gear on the ratchet wheel. When the ratchet wheel rotates in the direction that complies with the pawl, the gear on the ratchet wheel can gently lift the pawl and rotate it smoothly. When the ratchet wheel rotates in the direction that the pawl blocks, the pawl is only compressed in length due to the positioning device and cannot rotate with the ratchet wheel. In addition, to always pull the pawl toward the positioning device and maintain good meshing between the pawl and the gear on the ratchet wheel, an elastic steel wire or other elastic device can be installed next to the pawl. This elastic steel wire or other elastic device is placed on the pawl and always keeps the pawl gently pulled toward the positioning device.

[0021] Different ratchet devices have different operating modes. Some ratchet devices rotate the ratchet wheel while the pawl is fixed, some ratchet devices rotate the pawl while the ratchet wheel is fixed, and some ratchet devices may adopt other more complex operating modes. However, regardless of the operating mode, the ultimate effect is to achieve unidirectional rotation of the swivel along the pawl. Ratchet devices with different operating modes can be transformed into new ratchet devices that allow bidirectional rotation of the swivel without damaging the pawl and / or ratchet wheel by replacing the pawl with the pawl with an overall length that is flexible and retractable as proposed in this utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are merely schematic diagrams of the key points of a novel ratchet device proposed by the present invention, and are not intended to limit the scope of protection of the claims of the present invention.

[0023] Figure 1 This is a schematic diagram of the overall outline of a new ratchet device proposed in the present utility model.

[0024] Figure 2 This is a schematic diagram of the pawl after the pawl base end is cut open.

[0025] Figure 3 This is a schematic diagram of the overall outline of a folding desk lamp using the novel ratchet device.

[0026] Figure 4 A schematic diagram of a new ratchet device located in a local area of a folding desk lamp.

[0027] The numbers in the accompanying drawings are: 1 represents a ratchet, wherein: 1-1 is a gear, 1-2 is a square shaft hole; 2 represents a pawl, wherein: 2-1 is the pawl tooth end, 2-1-1 is the tail of the pawl tooth end, 2-2 is the pawl elastic device, 2-3 is the pawl base end, 2-3-1 is the mounting hole; 3 represents a folding table lamp, wherein: 3-1-1 is the first folding rod, 3-1-2 is the second folding rod, 3-2 is the lampshade, 3-2-1 is the connecting component, 3-3 is the base, 3-4-1 is the first mounting support, 3-4-2 is the second mounting support, 3-4-2-1 is the positioning column, and 3-4-2-2 is the elastic steel wire.

[0028] The accompanying drawings illustrate only the key features of the embodiments of the present invention to further illustrate the present invention, but are not intended to limit the scope of the claims. For example, the arrangement of the gear 1-1 on the side of the ratchet 1 is not shown, and the various possible arrangements are not exhaustive. The assembly of the pawl tooth end 2-1 and the pawl elastic device 2-2 within the pawl base end 2-3 in the accompanying drawings is a well-known function and operation method, and various arrangements are possible, so this invention does not elaborate on this. DETAILED DESCRIPTION

[0029] The following description is made with reference to the accompanying drawings and the following embodiments are provided as further explanations, but are not intended to limit the scope of protection of the claims of the present utility model.

[0030] Examples. See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 .

[0031] The novel ratchet device of this embodiment includes a ratchet 1 and a pawl 2 .

[0032] Gears 1-1 are arranged on the edges of the ratchet 1, and a square shaft hole 1-2 is arranged at the center of the ratchet 1.

[0033] The pawl 2 includes a pawl tooth end 2-1, a pawl elastic device 2-2 and a pawl base end 2-3; the pawl base end 2-3 has a cavity inside and an opening at the front end, and the rear end of the pawl base end 2-3 has a mounting hole 2-3-1; the tail 2-1-1 of the pawl tooth end is in the internal cavity of the pawl base end 2-3, and the width of the tail 2-1-1 of the pawl tooth end is larger than the width of the front end opening of the pawl base end 2-3, and the pawl tooth end 2-1 extends out of the pawl base end 2-3 from the opening at the front end of the pawl base end 2-3; the pawl elastic device 2-2 is a spring, which is placed in the internal cavity of the pawl base end 2-3, between the tail 2-1-1 of the pawl tooth end and the bottom of the internal cavity of the pawl base end 2-3.

[0034] In this embodiment, one side surface of the pawl base end 2-3 can be removed (not shown in the accompanying drawings). After the tail portion 2-1-1 of the pawl tooth end and the pawl elastic device 2-2 are placed into the internal cavity of the pawl base end 2-3, this side surface is then installed, so that the pawl tooth end 2-1, the pawl elastic device 2-2, and the pawl base end 2-3 are assembled into a stable whole. The static value of the elastic force of the pawl 2 is 20 Newtons. In this embodiment, when the pressure applied by the pawl tooth end 2-1 to push into the pawl base end 2-3 is less than 20 Newtons, the pawl elastic device 2-2 will not be compressed, and the overall length of the pawl 2 will not change. Only when the pressure applied by the pawl tooth end 2-1 to push into the pawl base end 2-3 reaches 20 Newtons will the pawl elastic device 2-2 be further compressed and shortened, thereby shortening the overall length of the pawl 2. The pressure exerted by the gear 1-1 on the ratchet 1 on the pawl 2 can generate pressure that pushes the pawl tooth end 2-1 inward toward the pawl base end 2-3. To achieve a pressure of 20 Newtons pushing the pawl tooth end 2-1 inward toward the pawl base end 2-3, the minimum pressure exerted by the gear 1-1 on the ratchet 1 on the pawl 2 is the deformation pressure, that is, only when the pressure exerted by the gear 1-1 on the ratchet 1 on the pawl 2 reaches the deformation pressure, the length of the pawl 2 can be compressed and shortened. The breakthrough force of the novel ratchet device of this embodiment is 25 Newtons, that is, when the pressure exerted by the gear 1-1 on the ratchet 1 on the pawl 2 reaches 25 Newtons, the overall length of the pawl 2 will be compressed to a short enough length that the pawl tooth end 2-1 and the gear 1-1 on the ratchet 1 no longer match and mesh, and the gear 1-1 on the ratchet 1 will slide over the pawl tooth end 2-1, and the ratchet 1 can achieve clockwise rotation. The breakthrough force of this embodiment is greater than the deformation pressure.

[0035] The pawl 2 is mounted next to the gear 1 - 1 on the ratchet 1 through the mounting hole 2 - 3 - 1 on the pawl 2 , so that the tooth end 2 - 1 of the pawl is engaged with the gear 1 - 1 on the ratchet 1 .

[0036] In this embodiment, when the pressure of the gear 1-1 on the ratchet 1 on the pawl 2 does not reach the breakthrough force, the working principle and working mode of the new ratchet device are the same as those of the ratchet device on the current mechanical equipment, and the ratchet 1 can only rotate counterclockwise but not clockwise.

[0037] When the pressure of the gear 1-1 on the ratchet 1 on the pawl 2 reaches 25 Newtons, the ratchet 1 can rotate clockwise; when the pressure of the gear 1-1 on the ratchet 1 on the pawl 2 is reduced to less than 25 Newtons, the length of the pawl elastic device 2-2 will be restored, so that the overall length of the pawl 2 will also be restored, and the pawl tooth end 2-1 and the gear 1-1 on the ratchet 1 will match and engage with each other again, and prevent the ratchet 1 from rotating clockwise, and only allow the ratchet 1 to rotate counterclockwise; only when the pressure of the gear 1-1 on the ratchet 1 on the ratchet 1 continues to maintain a breakthrough force of 25 Newtons, can the ratchet 1 continue to rotate clockwise.

[0038] On the premise of ensuring that the pawl 2 is well engaged with the gear 1-1 on the ratchet 1 and generating sufficient and stable resistance, the size and shape of the gear 1-1 on the ratchet 1 and the size and shape of the part of the pawl tooth end 2-1 that engages with the gear 1-1 can be designed, and the radius of the ratchet 1, the shape of the pawl 2 and the length of the pawl 2 when not under force are comprehensively considered. The installation position of the pawl 2 next to the gear 1-1 on the ratchet 1 is reasonably arranged so that when the pressure of the gear 1-1 on the ratchet 1 on the pawl 2 is increased from deformation pressure to breakthrough force, the overall length of the pawl 2 is compressed and shortened as little as possible.

[0039] In order to further illustrate the solution of the present utility model, a folding desk lamp 3 is introduced in this embodiment as an application scenario of the solution of the present utility model.

[0040] The base 3-3 of the folding desk lamp 3 has a first mounting support 3-4-1 and a second mounting support 3-4-2, and one end of the first folding rod 3-1-1 is mounted between the first mounting support 3-4-1 and the second mounting support 3-4-2.

[0041] A ratchet 1 is installed on each side of the front and rear ends of the first folding rod 3-1-1 installed on the base 3. The central shaft hole of the ratchet 1 is a square shaft hole 1-2, which ensures that the ratchet 1 rotates synchronously with the first folding rod 3-1-1. The gears 1-1 on the two ratchets 1 rotate in opposite directions.

[0042] A ratchet 2 is installed on each of the first mounting support 3-4-1 and the second mounting support 3-4-2, and is matched and engaged with the front and rear ratchets 1 on the first folding rod 3-1-1, respectively, to form two sets of new ratchet devices.

[0043] See Figure 4, the ratchet 1 is mounted on the first folding rod 3-1-1, which is drawn here for better understanding; the pawl 2 is mounted on the second mounting support 3-4-2 through the mounting hole 2-3-1 with a small screw (not drawn in the attached figure). The mounting position must ensure that the pawl tooth end 2-1 matches and meshes with the gear 1-1 on the ratchet 1; there is a positioning column 3-4-2-1 on the second mounting support 3-4-2, which can prevent the ratchet 1 from driving the pawl 2 to rotate when it rotates clockwise; one end of the elastic steel wire 3-4-2-2 is mounted on the positioning column 3-4-2-1, and the other end is a small hook shape (not drawn in the attached figure) that gently presses on the pawl 2. The elastic steel wire 3-4-2-2 is a curved shape as a whole, has good elasticity, and the elastic force pulling the pawl 2 is small; when the ratchet 1 is stationary, Under the action of the elastic steel wire 3-4-2-2, the pawl 2 is lightly pressed on the positioning column 3-4-2-1, and the pawl tooth end 2-1 of the pawl 2 is matched and meshed with the gear 1-1 on the ratchet 1; when the ratchet 1 rotates counterclockwise, the gear 1-1 on the ratchet 1 will push the pawl 2 to be slightly lifted and rotate smoothly. The elastic steel wire 3-4-2-2 allows the ratchet 1 to rotate counterclockwise and can always pull the pawl 2 toward the positioning column 3-4-2-1; when the ratchet 1 wants to rotate clockwise, when the pressure of the gear 1-1 on the ratchet 1 on the pawl 2 is less than the breakthrough force of 25 Newtons, the pawl 2 can prevent the ratchet 1 from rotating clockwise. When the pressure of the gear 1-1 on the ratchet 1 on the pawl 2 reaches the breakthrough force of 25 Newtons, the overall length of the pawl 2 will be sufficiently compressed, and the ratchet 1 will also smoothly rotate clockwise. The pawl 2 on the second mounting support 3-4-2 matches the ratchet 1 on the first folding rod 3-1-1, allowing the first folding rod 3-1-1 to be easily lifted up, but requires force to press the first folding rod 3-1-1 downward.

[0044] The first mounting support 3-4-1 also has a structure similar to that on the second mounting support 3-4-2 (not shown in the accompanying drawings), but the pawl 2 is oriented in the opposite direction; the pawl 2 on the first mounting support 3-4-1 is matched with the ratchet 1 on the first folding rod 3-1-1, allowing the first folding rod 3-1-1 to be easily pressed down, but force is required to lift the first folding rod 3-1-1 upward.

[0045] The weight of the folding desk lamp 3 exerts a force on the two new ratchet mechanisms between the first and second mounting supports 3-4-1, 3-4-2, and the first folding lever 3-1-1, which is insufficient to force the gear 1-1 on the ratchet 1 against the pawl 2 to break through. The two new ratchet mechanisms formed between the first and second mounting supports 3-4-1, 3-4-2, and the first folding lever 3-1-1 ensure that the first folding lever 3-1-1 remains stable at the adjusted position and angle.

[0046] There is also a new ratchet device between the other end of the first folding rod 3-1-1 and one end of the second folding rod 3-1-2. At the connection between the first folding rod 3-1-1 and the second folding rod 3-1-2, the ratchet 1 is installed on the first folding rod 3-1-1 (or the second folding rod 3-1-2), and the pawl 2 is installed on the second folding rod 3-1-2 (or the first folding rod 3-1-1), and a positioning column and an elastic steel wire are provided on the main body for installing the pawl 2. The overall structure and principle are similar to those of the first folding rod 3-1-1 installed on the base 3, except that there is only one new ratchet device between the first folding rod 3-1-1 and the second folding rod 3-1-2. Relative to the first folding rod 3-1-1, the new ratchet device between the first folding rod 3-1-1 and the second folding rod 3-1-2 allows the second folding rod 3-1-2 to be easily lifted, but force is required to press the second folding rod 3-1-2 down. The force exerted by the weight of the folding desk lamp 3 on the new ratchet mechanism between the first folding lever 3-1-1 and the second folding lever 3-1-2 is insufficient to force the pressure of the gear 1-1 on the ratchet wheel 1 against the pawl 2 to reach a breaking force. The new ratchet mechanism between the first folding lever 3-1-1 and the second folding lever 3-1-2 is not shown in the accompanying drawings.

[0047] The connecting member 3-2-1 of the lampshade 3-2 is connected to the other end of the second folding rod 3-1-2. A novel ratchet mechanism is also provided at the connection. Its structure and principle are similar to those of the novel ratchet mechanism between the first and second folding rods 3-1-1 and 3-1-2, and will not be described in detail here. The novel ratchet mechanism between the first and second folding rods 3-1-1 and 3-1-2 is not shown in the accompanying drawings.

[0048] By adopting the novel ratchet device of the present invention, the folding state of the folding desk lamp 3 can be adjusted at will, and the adjusted position and angle can be well maintained.

[0049] The folding desk lamp 3 is an application scenario of the novel ratchet device of the present invention, which is intended to further illustrate and understand the solution of the present invention, and is not intended to limit the scope of protection of the claims of the present invention.

[0050] For those skilled in the art of the present application, it is possible to make a number of simple deductions or substitutions without departing from the concept of the present application, without having to resort to creative work. Therefore, simple improvements made to the present application by those skilled in the art based on the disclosure of the present application should be within the scope of protection of the present application. The above embodiment is only one solution of the present application, and there are many other solutions that cannot be exhaustively listed. All structures similar to the present application and any equivalent changes made should fall within the scope of protection of the present application.

Claims

1. A new ratchet device, characterized in that: Includes ratchet and pawl; There are gears on the ratchet; The pawl includes a pawl tooth end, a pawl elastic device and a pawl base end; One end of the pawl tooth end matches and can engage with the gear on the ratchet wheel; The pawl elastic device is located between the pawl tooth end and the pawl base end, one end of the pawl elastic device contacts the other end of the pawl tooth end, the other end of the pawl elastic device contacts the pawl base end, and the pawl elastic device is in a compressed state by the pawl tooth end and the pawl base end; The base end of the pawl is installed next to the gear on the ratchet to ensure that the tooth end of the pawl can mesh with the gear on the ratchet; When the pressure of the gear on the ratchet wheel on the pawl is greater than or equal to the breakthrough force, the pawl elastic device is compressed, and the overall length of the pawl is compressed to a sufficiently short length, so that the pawl and / or the ratchet wheel can rotate in the direction blocked by the pawl; the breakthrough force is the minimum pressure of the gear on the ratchet wheel on the pawl required to achieve the rotation of the ratchet wheel and / or the pawl in the direction blocked by the pawl; the breakthrough force is greater than the deformation pressure, and the deformation pressure is the minimum pressure of the gear on the ratchet wheel on the pawl required to achieve the pressure of the pawl tooth end on the pawl elastic device reaching the elastic static value, and the elastic static value is the outward elastic force of the pawl elastic device on the pawl tooth end when the pawl is not subjected to external force; When the pressure of the gear on the ratchet wheel on the pawl disappears or decreases to less than the breakthrough force, the pawl elastic device stretches the entire length of the pawl from the compressed state to lengthen it, and the new ratchet device resumes the unidirectional rotation working mode.

2. A novel ratchet device according to claim 1, characterized in that: The pawl elastic device is installed in the internal cavity of the pawl base end, the pawl tooth end is partially inserted into the internal cavity of the pawl base end, the pawl elastic device is located between the pawl tooth end and the bottom of the internal cavity of the pawl base end, and the pawl elastic device is in a compressed state; or, the pawl elastic device is installed in the internal cavity of the pawl tooth end, the pawl base end is partially inserted into the internal cavity of the pawl tooth end, the pawl elastic device is located between the pawl base end and the bottom of the internal cavity of the pawl tooth end, and the pawl elastic device is in a compressed state.

3. A novel ratchet device according to claim 1, characterized in that: A positioning device is provided next to the pawl, and when the pawl is pressed against the positioning device, it meshes with the gear on the ratchet wheel; When the ratchet and / or pawl rotates in the direction blocked by the pawl, the pawl will stick to the positioning device and be compressed in length. Because of the presence of the positioning device, the pawl will not rotate with the rotation of the ratchet and / or pawl.

4. A novel ratchet device as claimed in claim 3, characterized in that: An elastic device is installed beside the pawl, one end of the elastic device is installed beside the pawl or on the positioning device, and the other end of the elastic device is placed on the pawl and always keeps the pawl pulled toward the positioning device.

5. A novel ratchet device according to claim 3 or 4, characterized in that: The positioning device is a positioning column.

6. A novel ratchet device according to claim 4, characterized in that: The elastic device is an elastic steel wire.

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